ppragman
FLIPY FLAPS!
Per everything we are taught, when it comes to wx our radar is more accurate (and broader picture) than yours. Having never seen a aircrafts weather radar, I can't say if that's true or not
ATC radar typically sucks. Mark 1 eyeball is the best thunderstorm avoidance tool if it's available (difficult at night or IMC), after that onboard radar is good, after that I'd prefer to go the "long way around" using datalink, then finally, if I have no other tools...I'll take ATC advice about that sort of thing.
Your guys' radar is probably "more accurate" with regard to what it can depict, but it's super delayed, and we have a lot better resolution.