I'd say this is accurate, but it's funny when you think about it. If they had tons of people (through merging, battlegroups, whatever) to do excellent match making, then your gear bonus would be negated anyway since you'd only be playing against similar players in similar gear.
The only advantage better gear provides requires worse geared players to use it against. So, people in favor of gear progression instead of/in addition to a simple rating match making system benefit more from poor match making.
TLDR, progression=advantage. if you want an advantage, you don't want good match making