So I let my Steamdeck go, it had an issue with one of the trigger buttons (I think after dropping it) and I managed to sell it and recoup most of my funds still ^_^
I opted to go for one of these instead of rebuying the Steamdeck, I think the big draw for me was having Windows straight off and not having to faff about trying to install it manually on the Steamdeck, playing with drivers etc. So I feel after having it for a week I can somewhat compare the 2 and I think as I was chatting to Greboth the other night there is a market for each of them and I don't necessarily feel like they are stepping too much on each others shoes.
Power / Grunt of the consoles -
The ROG wins this hands down, I can play Baldurs Gate 3 on high settings, it's also capable of running outer wilds and such which the Steam Deck somewhat struggles with. The ROG is definately the more powerful console. You are able to change the power settings so you can run at I think 5W, 15W & 25W (or 30 if plugged in), so you can adjust the power draw depending on the game you are playing, however it is worth noting that on more demanding games and running at a higher power draw the machine can run quite hot (something I will get onto later)
Audio -
I don't think there is much in this, the ROG has Dolby Atmos I believe but it does not make too much of a difference, I will note that playing Baldurs Gate 3 I seem to get some crackling in the speakers sometimes, I haven't had this with other games so I am not sure if it's the demand of the game on the chipset. On the whole I would say they are pretty even on this one.
Screen -
I think the ROG just edges it, it's a higher refresh rate and just looks a little bit sharper, that said, is it enough to justify buying it over the steam deck for the screen alone? Nope I wouldn't say so.
Portability / battery -
I think this is a point where the steamdeck may just win out, I find myself charging the ROG more, this might be due to the more demanding games I am playing mind. But due to this I have mostly been playing whilst plugged in and this obviously detracts from the portability. For me that is not an issue as I am using it in place of my Playstation when the kids are about at home (they tend to stand in front of the tv a lot when playing) but if you want a true handheld then I probably would not recommend the ROG over the steamdeck.
Controls -
The ROG does not have the trackpad admittedly, that said I think this boils down to the games you play. The ROG controls are basically like using an XBOX controller, so mainstream games tend work pretty well with it. I can navigate the OS with the gamepad fine or use touchscreen. Obviously the Steamdeck has the trackpad, which if you are comfortable with it is great and obviously for RTS games and such it is brilliant. I think the Steamdeck just pinches this one just by having more options of controls.
OS -
For me the ROG wins this one, I am a fan of the current Windows and it being installed by default there is no messing around, I can install anything and it all runs simply. Yes it can be a little fuddly on a smaller screen but on the whole the fact that it has a wider compatibility for me is great. For most people Windows is the problem with this handheld as it is not great for touchscreen etc, that said I tend to control it with the sticks fine. The console also has what is called Armoury Crate I think which is a layer over the top which allows you to easily access games or game launchers all from one menu (similar to how the Steamdeck works). Steam OS is great in itself in that it has been designed and adapted specifically for the Steam deck, it works fairly flawlessly and the obvious benefit of having such a good community behind it does help. Being able to access control schemes others have set up and such.
Other notes -
Going back to heat, the ROG get's quite hot and there have reportedly been issues around the SD card slot location, the exhaust vents are right next to the slot and some users have reported it burning out SD cards, certainly not great considering the device only comes with 512gb storage, a SD card for most people is a must. It has not happened to me yet, but so far I have only used the SD slot to transfer things between my tablet and my ROG and not to game from. I do plan to upgrade the internal storage at some point.
Pricing, the ROG has only one price point and it is pretty steep! The Steam deck has options with the bottom rung being much more available and affordable for people (I would not write off getting one again).
On the whole I think it is pretty 50/50, yeah the ROG wins out on power, screen and compatibility but the Steam deck is the better designed product. I think it will largely come down to your preference and the sort of games you want to play on it. If you want a handheld that can play great indie games and every now and again you might push it to play the Witcher 3 or something akin to that then the Steam Deck is perfect, if you want something with more grunt but you don't mind being tethered in place or lumping round a big power bank, being able to play current release Triple A titles then the ROG is the way to go 🙂