Nah, it's something else. Remember that at the same time they introduced zoe, they updated a lot of weapon cert/sc costs. I don't think that anyone that can play HA effectively can't be awesome (though less versatile) in a max. The difference is in cert investment requirement, which zoe giving the advantages that mattered for 150 certs. The other thing that really made a difference is the enormous shift in VS mentality towards maxes in general. Prior to the zoe intoduction, if I wasn't in my outfit squad I would have to practically hunt for engineers, then sit next to them whining for repairs, get ignored and then move to somebody else that might want to do it. Now though, this is max heaven, with two and three engineers racing to repair you, medics risking to rezz you and people supporting you like you're a true asset. And all the experience I described previously was in a max with composite armor and camos etc, which is a good indication of cert investment. I can't imagine how the quality of life of people whose cert investment was not obvious.