Well to be honest,
I have to agree with you that the differences are not spectacular.
Yesterday I went to see Michel Voncken demonstrating T2(his show was great!) and actually apart from the guitars, harddisk recording and the fantastic keyboard-action differences are minor.
The styles are somehow different but I think within a few days or weeks these T2 styles will be available for T1...

So I will stick with my T1 and right now I'm going to save for buying a Yamaha P250 stagepiano.