It's a stadium rock show alright (reminds me of the Stones ever since they became a stadium band with a plethora of extra musicians and singers), no two ways about it. A predominantly white audience, rock alumnis in the backing band (the right guitarist is John Miles, he of "Music" fame, on other tours ex-Wishbone Ash guitarist Laurie Wisefield was her musical director), the music is inoffensive mainstream AOR, not entirely different from what you would hear at a Bryan Adams or Bob Seger show, there is not really much funk, blues or soul in it (the frantic energy is a bit reminiscent of James Brown or Sam & Dave soul revues though). And Tina had a distinctive voice, but she was no Bessy, Billie, Ella, Aretha or Whitney.
But no matter, she delivered. And the way she rebuilt her career after ditching her abusive husband (who had his qualities as a musician) is commendable. While she had retired from live work for a while, it feels a bit like the end of an era to me.