Schmidt and Bender is widely respected throughout the world. They are established, make great products that have been "tested" in every facet of the word for years.
TT might be the next big thing, but anyone buying is taking a huge leap of faith. What is their customer service like? How many people have used them in the field or
combat for extended time periods to validate and not just some initial "beta" review? Are they going to sell you a $4k optic and then go out of business in a few years like Premier?
I've been down this road before with buying new products from even well established companies, where they face recalls, bugs that haven't been worked out, failing components, etc. Until it's put in the hands of several thousand people and fully field tested, there's a risk.
Tunneling isn't a big deal. You might as well say the PMII 5-25 is really a 7-25. They could have easily just chopped off the lower magnification and called it a 4.5x
mag range, but they're victims to marketing as well. People would still buy the PMII if it was marketed as a 7-25.
As far as ergonomics, you could probably find individual preference items (like tactile clicks, mechanical features for zero and return, etc) and what not where SB is behind the
leading edge.
You could go on a dozen other sites and S&B is one of the top in any discussion. TT is new to the game. Like I said, are they better? Well, you have a few data points, is that enough to make your decision, only you can decide. Once you get up into that price
range, I don't think there are many "bad" products.