Ok I thought I'd read that 4.0.x devices were still supported. It's hard to say if the ROMs are 'stock'. Aren't they all 'non-stock' except for Nexus devices and some others that provide a 'pure' Android? The phone has a custom startup screen (Vodafone) and I think the old Sense UI, and the Acer has it's whatever UI on top I guess. Maybe just freak luck it works on the HTC phone. Pity, as I lose my only 10" testing device.
As far as features I use, it's a heavily UI (control) based app with no physics and hardly and 2D type nodes.