Tweek:

The Masher 2k's weigh in at 88 grams. The Proline speedhawgs weigh in at 45 grams. The M2k's do indeed weigh almost DOUBLE what the speed hawgs do.

The Gladiator weighs in at 61 grams, and the dirt hawg at 63 grams. Larger tire, more weight, larger roll out, requires more leverage to get it moving.

As for your opinion, Ballooning deceases the available traction, by minizing the contact patch of the tire. Less tire on the surface, means more slippage, and yes, slower top speed!

It's physics, my friend. Not opinion.....