iOS device tiers for gaming

[defred34]

Hey guys, just wanted a quick opinion on this.

Am I right to assume that there are three main device classes as below (classed in terms of general gaming performance)?

Tier 1: iPhone 5, iPad 4
Tier 2: iPad 2, iPad 3, iPad Mini, iPhone 4S, iPod Touch 5
Tier 3: iPad 1, iPhone 4, iPod Touch 4

We can already see that support for Tier 3 devices are dropping.

Tier 2 devices form the largest group, and two of them are brand new (iPod Touch 5 & iPad Mini).

I have an iPad 2, and I would like to know from you guys, when do you think support for Tier 2 devices will start dropping? One year from now? Or more?

Just another extra though: If indeed the Tier 2 device are supported till the end of next year, that would mean the iPad 2 could have been playing the highest end games for 32 months! Which is a really great achievement in the mobile space, considering my Tegra 3 Android tablet has already started ageing despite being just a few months old!