It depends on the gametype. For smaller team games, especially elimination striker seems powerful and is a great way to end someone's self res. I personally still play Sunbreaker in rift and clash and get four people supers all the time. It is a lot harder to nail those hammers but still manageable. Control and rarely tumble are where I put on the backup plans and go to town with defender. People will give you easy kills and it is so fun to watch your grenade tick for one damage yet shut down a Stormcaller, bladedancer, or gunslinger super trying to -blam!- with you and your bubble.