Panda, if your going to try and shout down a long term forum member with slightly dodgy logic and he calls your bluff you have two choices:
1: Have a match against him/her and accept the outcome
2: Concede your point and be a little easier on him/her next time you disagree.
I have had a lot of matches with and against Immmortal Chaos and he plays well, understands the game and is a quality player overall. I learned from being his ally and you probably could too.
Playing a couple of matches would probably be quite fun. Sometimes we win and sometimes we lose, currently you are losing this argument by a country mile. The only way to save face would be to have a match and win, if your not willing to even TRY you really ought to tone down the reteric.
Personally i think DE Warriors versus Shoota Boyz would come down to the better use of the Mek and Archon, slugga use also being important.
The only point i would make is that warriors scale badly whereas shootas scale reasonably well as well as benefitting from Mob Based HP regen bonuses, morale immunity etc.
As IC says, the only way to know for sure is to lab it.