Then again, we have to narrow it down to ML. And we already saw what happened in ML4 & ML5. Did we not?
Yes tournament results should be taken into account. One thing to note tho (unless a specific strat is very dominant) tournament players will choose the strat and faction they are the most confident with. Im not suprised that ost and sov are the mpst picked factions in ml5 as they both dont suffer as much from commander vetos and are the most complete factions.
I dont think this will ever change
Theres also a very distinct difference between tournament and automatch (which doesnt mean either statistic is less important).
Guard motor for example is the most common sov 1v1 doc while only 30% of ML players bothered to veto it. Armored Assault is maybe the most infamous tournament doc of all time yet is only 6th pick in automatch.
OKW spec ops is only 5th pick in automatch but was worth a veto for 83% of tournament player (dont know which brain nugget didnt veto that one, should be 100%)
To balance every faction you have to somehow keep most relevant stats in mind, listen to 4v4 heroes and keep the tournament scene clean from abuse... doesnt seem like an easy task. I would agree that Brits are not in a very good state atm but i would rather have one ded faction than an overly dominant one.