Coulda, shoulda, woulda...
If it wasn't for Newt, they would've been surrounded and dead sooner. If it wasn't for Ripley driving into the hive they woulda been dead sooner.
No, it was Vasquez' fault that Vasquez and Gorman died. She kept the rear guard and therefore couldn't keep up and got nailed. All things considered Ripley had the tougher job being on point not knowing what's around the next corner. At least Vasquez could see where her enemy was.