There are definite design issues at a fundamental level(i.e. Memory throughput). But to the die size argument, a point against direct comparison of die size in Intels favor is it has decided to put a ton of high level features/accelerators on every dGPU which beefs up the die size without any direct gaming performance uplift (AV1 encode, AI training, etc...) while AMD/Nvidia reserve most/all of these features/accelerators for a pro/data center line. Now if XeSS was working/functional everywhere it could help close that performance gap, although it is more of a trick/shortcut to improve FPS, ARC still has fundamental frame delivery issues compared to the others that hopefully can be addressed in drivers.Intel has a die size of the 3070ti and can't beat a 3060 consistently. It's not just drivers, but their design. I won't nitpick what is more than the other (pretty stupid and moot to do so), but Intel is still years behind and ARC made it clear.
Arc is still a very compelling card to a creator thanks to the pro features at consumer prices.