I find the performance of Fusion compared to Parallels somewhat lacking, even more so with Fusion 11. Initial releases of it were a mess.
Now, I wouldn't say I see an awful lot of performance difference between my i7 2017 16Gb unit, and my i9 32Gb unit running 1 or 2 VMs tbh. What I do get from the i9 is that I can run my entire demo suit of 7/8 VMs...and I couldn't do that on the i7. So it scales OUT better.
I was about to post write a longer version of the above, glad I refreshed first!
In short: I use Parrells for Windows VM's and for all my Linux VM's I use Fusion as they have no GUI and it integrates with my VM homelab.