Assuming that's the best I can do with my crappy cards, which one for the event?
Left has better speed, aptitude and skills / skill activation.
Right has less shitty stamina and might survive Natie a bit better.
I have a Goldshi has backup so I guess Left would be better for the rare time I get a race with no/low debuffer, but not sure.

Also, how the fuck do people get Umas with much fatter stats? Those two runs had nearly no problems and both land at around 3200 total stats, do people just roll the dices a hundred times for that a one run where they get triple rainbow every single turn or something?