i dont think anybody has formally made such test, where you'd isolate the variable of wheel X in setup 1 uses T700, and wheel Y in the same exact setup, except it uses T1100. Because it'd be very hard to source the same rims and build the same wheels, and just change that variable. You'd also have to trust the factory is indeed providing the mix they claim they provide, as you can't validate it yourself, afaik.
The main reason why higher grades are used in rims is for weight, but T1100 is high modulus, so very stiff, but also very brittle. And a wheel needs to be impact resistant, so a 100% T1100 wheel doesnt exist, for example, it's going to be a mix. T700, and when it's used, T800, are the backbones of carbon stuff in bikes. T1000 / T1100 can be added to the mix, in proportions that factories do not like to disclose, to save on weight. You'd expect the wheel to be stiffer if T800 is used over T700, and T1100 over T800.
The new kids on the block are M40/M60, or T40/T60 (i think it's the same thing), and i understand they're fancier versions of T700 & T800. We've been seeing it in OEM frames for a couple of years, probably longer in branded ones (i think the likes of Sworks, Factor, Pinarello, not the maintstream ones), but I havent seen it in wheels.
And so, yes, T1100 should be less compliant, because of it's physical properties, as it'd be replacing T700 / T800 in the mix used.
