[corresation]

You seem to think that each of these posts is supporting what you claim, when it's doing nothing of the sort.

Firefox was slow because it had a very expensive abstraction layer that, while tolerable on a high power desktop, was just too much for what could be a low power mobile device. They didn't switch from C++ to Dalvik, they changed their GUI layers and how they initialize. This does nothing, at all, to support your claim about native apps being either slow to start or being large.

Nor does the Chrome bit. It's a large, full-featured browser. Further, on what is it slow to start?