Want to throw a brick that’s armed to the teeth into a combat zone? Get a Vargur
Feel the need to #gofast? Get a Mach
Basically… They are both completely different ships used for different roles and you can’t grab 5 stats off of both ships and say “X is better because of guns”. There are more factors in play for these 2 ships, even before factoring in playstyles and preferences. I personally liked my Marauders back in my mission days for some missions (or how I felt at the time) because you can just park them in a deadspace, pull the handbrake (bastion) and blap away.
Though if I felt the need to #gofast, out came the machariel and burner ships and fast I went.