Capybara physics comparison between Opus and Argon

Opus 5.5 made stretchy capybaras. Gemini 4 Argon made standing capybara sheets. Same prompt. Opus on top, Gemini 4 Argon below. Same moves on both: pull a paw, yank the head, squish it flat, throw it, then pour a pile on top. Pull a paw and the whole Opus capybara stretches into a long strip, then snaps back and wobbles. Squash it and it pancakes, then pops back up. Throw it and it knocks its neighbor aside. Gemini 4 Argon becomes a thin sheet when pulled and never recovers. It stands there like paper. Yank the head and the whole body lifts with almost no deformation. It did nail the squish. The pile at the end: Opus gets four fur colors stacked together. Gemini 4 Argon gets one color, landing in a row and clipping through each other. Opus also gave them eyes, blush, and a little orange on one head. The Gemini 4 Argon capybaras have no eyes.