I've used both as crosses paired with Tonic + mains and I found that Team keeps its playability quite a bit longer than Blast. I couldn't tell you why but I get about 6-7 weeks of really good play with that setup where RPM Blast was about 3-4 tops. In terms of feel I couldn't tell you if one was softer than the other.
(4) Volkl PB 10 Mids
Babolat Tonic+ 16/Babolat RPM Team 17 @ 51 lbs