Trial by Fire tour question

Much has been said of Perry's voice in later years especially when he bowed out of the Trial by Fire tour. Now by all accounts prior to the recording of the record the guys met up in a rehearsal studio in L.A and got used to playing together and got some ideas together for the record.Now i would imagine that they ran through a few old songs to get the feel again.
Now if Perry's voice was not in any shape to do justice to the old songs,how in hell were they intending to tour for Trial by Fire????? Now i know there was a lot of money on the table for this reunion,but if you cant cut it live how are you going to tour? So it could be said that maybe his voice was not in as bad shape as people thought?
I brought this up when i was at BT but it was not very well recieved,so here it is again for you guys.
Now if Perry's voice was not in any shape to do justice to the old songs,how in hell were they intending to tour for Trial by Fire????? Now i know there was a lot of money on the table for this reunion,but if you cant cut it live how are you going to tour? So it could be said that maybe his voice was not in as bad shape as people thought?

I brought this up when i was at BT but it was not very well recieved,so here it is again for you guys.
