Like DG40 said they are the same outside those 2 differences
tires are even the same size, just different thread pattern.

there is one other option that is probably better look at the Hyper 7 it should be a tad cheaper, but has a bigger engine that will last longer. Not that the G3 is a bad engine its just a .18 so it has to work way harder to get it up to speed, and I find the smaller engines don't last as many gallons (but in hind site they don't use as much fuel either)

Just for the record 1/8th scale buggies are about the same size as 1/10th scale ST's and will drive over the same obstacles, I have the tires that go on the bullet ST, and they are just a tiny bit bigger than 1/8th scale buggy tires(to the point it would be negligible when driving offroad).