It took the third season for Skidoo to get their turbo to perform. Polaris has only had 1 season on the snow so far so given equal time I think you will be surprized. It won't look like the original Boost by then but the 21 turbo Doo is not the same as the 23's either.
I did not want to wait for Polaris to improve so I just had Altitude Power Sports give my 22 Boost the required upgrades to surpass or at least perform on par with a G5. It is however a known fact that I can only use about 47.5% of the Boosts new potential..........on a good day.