The thing is the differences between bikes and wheel set up are are minimal. Zwift blog has a breakdown of the difference for each combination on each course, flat, hilly or mountainous. It is measurable. Honestly the differences are so small it barely raises a mention compared to concerns about weight doping especially in cat A and B races.
I never minded it. I knew it meant people were fractionally faster because they had benefited from riding on Zwift longer. I am now eligible to ride any bike combo but it never occurs to me to pick the slightly faster bike for the course. It's the same with power ups. Not fussed, rarely use them. At least i know they are there and others may use them. Not much difference to those infamous accelerations and time warps bkool used to have. I still bristle at one that allowed Bill to beat me towards the end of a race


Anyway this is all nit picking something the internet allows us all to do

Some more than others.
The fact of the matter is that however gamified Zwift may be, bsim appears fundamentally less accurate and reliable a platform. It registers and broadcasts bonkers power based on cadence. It is closed to proper examination and evaluation with a power meter, and whilst initially that benefitted pro and classic users it is now benefitting (perversely) another brands trainers! It won't let you use a PM! At last in Zwift I know that someone riding with a PM, or a PM based turbo or a properly calibrated smart trainer will be putting out accurate watts and they will be accurately reflected in realistic speeds. Faster bike and wheels? Pfft!
Ps the difference in time between the 1st and 5th fastest bike over the hilly Watopia course of 18.4m is 16 seconds. 225w at 75kilos . That is
50m 52s
51m 08s
The slowest of these 5 can be unlocked at level 13 which is less than 1000km on Zwift.
measurable data in what is a game.