[MatthewPhillips]

Touch events - Android (any version) vs. iPhone (any version).

IndexedDB - Chrome Mobile has it (outdated version), Android and iPhone do not.

Chrome will have Dart support at a later date, no other WebKit vendor is going to implement it.

There are literally dozens, just go to caniuse.com and play around for a bit.

[alexchamberlain]

The first 2 are simply version issues, whilst the 3rd is nothing to do with the rendering engine. Chrome uses V8, Safari does not.