Yes, it is a problem.
A good commentary from some veteran NS player.http://www.shambler.net/articles/nsbalance.phtml
What are your experiences? Personally most 2 hive games I played as a marine (both comm/grunt) ended with us being raped by pure fades or 2 fades + lerk umbra. Maybe I am always with a crappy team, but this happens 8 out of 10 times.
The only way marine (IMHO) can win is either they secure 2 hives ASAP or they rush the aliens.
I may disagree with everything you say, but will defend unto death your right to say it.