besides....MA is an abomination.....
the devs really didnt have a clue about BT.
i mean comon....they used the clan name and the IS name for a single chassis each with own loadout.
and the madcat/timberwofl was listed as a frickking 100 tonner.
as a mecha shooter..ya its ok.
but as battletech...it fails miserably.
Well...You know who worked on MechAssault?...This guy...

They did know about BattleTech
The thing is they wanted to make an arcade action game with the BattleTech license. Something to fit the taste of the console gaming crowd at the time, and to promote and accentuate the Xbox live service. If MechWarrior was Star Wars Tie Fighter, MechAssault was Rogue Squadron.
If you want to hear Mitch talk about it a bit, check out this IGN interview with him. It's a cool interview (MechAssault is specifically at the 23 minute mark)...