jump doesn't have a great counter to grizzly and especially multiple grizzlies. shields for racketeer might have helped, though i think athena would have been best for infi for single grizzlies and ulti for massed ones and also scythe which makes a surprisingly good counter to (at least unescorted) grizzly. skuttle is a pain in the ass to use and slow and expensive compared to racketeers or infis and as you saw isn't even a guaranteed kill despite being a guaranteed death.

the very early game pressure with pyro was pretty good but you only took two mexes in the meantime with your comm and then started throwing up defense, maybe a freaker earlier would have been wiser even if it meant letting up on offense.