That's not entirely true. There's luck in SC2; if you get lucky and scout your opponent first on a four-player map, you can defend some all-ins easier. If you get lucky and scout some obscure building rush, you can defend against it a lot easier. There might not be luck in the game mechanics in the form of RNG, but there's still luck. The point remains that good players know how to minimize luck-based situations and use them to their advantage, but the luck is still there in one form or another.
You are correct - this bit of luck is present in games like SC2, however minimal it may be.
In poker, if you get a bad hand, you fold and play another. Minimal loss. In most cases in Dota 2, if you get unfavourable damage rolls, you miss a last hit, or maybe in some rare situations miss a kill. Again, minimal loss. In CoH2, you miss the last hit on a Tiger Ace, well, game is hard. It's a problem of scale, not a problem of RNG = bad.
With this logic, in terms of poker, folding every time you get a bad hand means you will eventually win - which is not true. The game will eventually force you to play a bad had with the intention of making it a good hand - which it could turn out to be based of the flop - pretty huge but of luck going on there.
The same argument can be made in terms of CoH2 - A player that understands the chances of an AT gun getting that last hit on an expensive tank will do whatever they can to make sure there is 0% chance that AT gun can get a shot by staying away from it (folding one's hand).
I find that RNG in CoH2 has been fairly well balanced since launch (not talking about commander/balance issues). With skill one can effectively mitigate these risks to a high degree.
On the other hand the RNG is what makes CoH2 a company of heroes game. Now I never played at the uber high level in either game but I did play a lot of CoH as well, from launch and I can say that you could get squads wiped by a lucky arty strike or a lucky mine, there was a similar amount of RNG present at least from my perspective and experience with the games.
That being said I think there is absolutely room for improvement and I hope to see a lot of the issues that I have fixed in the next patch.
Do I also think that Relic and/or Sega made some poor decisions on the monetization/business model for the game? Yes, I do. This game has been out for just over 6 months I think, It took vcoh I'd say about a year to get to a really good level of balance and I also think that they can still change their model for the better, it could coincide with an expansion release, which I do not doubt is in the works.
In regards to OP - people criticize relic all day. But as soon as relic, gently, criticizes them in a very minor way, they lose their shit (not everyone, obviously). All he was trying to do was help guide the community a bit to help the game in a way outside of direct changes to the game.