DOS has some really good graphics and atmosphere but I find the level layouts mostly pretty boring. AOS is my favorite post-SOTN Metroidvania and I feel like Dawn took several steps backward and is the weakest of the DS trilogy.
AoS Castle & exploration>>>> DoS Castle & exploration
DoS Julius Mode >>>>> AoS Julius Mode
It’s neck and neck, but Julius Mode is worlds better in DoS (better than playing as Soma imho and takes out the touchscreen elements with the bosses)
AoS could’ve been better if it had a higher difficulty that was actually more challenging(hard mode is a joke) where as Julius Mode is that difficulty in DoS.
Therefore, DoS wins(narrowly) imo.