I know you're trying to spin the usual ball of 'Rrlic has no plan and fucks up big time', but this one really comes back at yourself.
AoE2 is a mechanically almost flawless game that has become one, maybe even THE standard in classic RTS. AoE4 did not beat it, surely, but it's taking in a lot of players at the moment. Relic has shown that they are willing and able to support the game long term, and that they know how to improve it.
CoH2 is not flawless by any means, you'll find stupid things and imbalances all over the place and you don't even have to look long or hard for them. The presentation is exceptional, but the mechanics are not. 'Living up' to CoH2 overall is not as hard as living up to AoE2.
CoH2 managed to dethrone CoH1, despite people complaining about all the talents of CoH1 having left already. If Relic supports CoH3 as they have shown to support AoE4, CoH2 will be forgotten by the end of the year. Thanks for showing that so clearly.
COH2 is already forgotten in my book in terms of playability after trying COH3. Frankly itd be the same story for COH1.
Too many improvements to ignore COH3, and its just getting started.