Can I just point out how huge the difference between the two modes is and how much salt the pvp achies will cause?
120 ranked wins + 20 tournament wins vs 100 kills and 100 objective caps.. like.. aren't the two supposed to be equally hard to obtain?
In Wvw, 100 kills and 100 caps just means: tag along with a commander for 1 evening and you'll probably have all of it. That's something you expect to do for an exo skin or something, not for a legendary trinket.
In Pvp on the other hand, 120 ranked wins means quite some time invested and doesn't cause any trouble since you just stick to the matchmaking. That seems about the only achievement that's more or less on point for a legendary. The 20 tournament wins however, seem like a desperate attempt to make people do tournament. Which is a really bad way to handle things and will only cause for a lot of raging and salt. Low skilled people won't be able to get their wins, and highly skilled teams will only get more free wins and unneccesary games that won't grant them any fun.
To me it just doesn't really seem like the impact of the needed tournament wins was considered properly, just as the very little time people will need for the wvw achies, kinda legendary-unworthy.