With Donington 1993, as well as Senna not rating it, I think a lot of people forget that it was actually very close with Prost anyway for much of the race (with Prost getting ahead for a bit when Senna had a delayed stop) and it only became dominant later on because of Prost stalling and making extra stops. If Prost's race hadn't derailed, Senna would have won by a bit and it wouldn't be so remembered.
But up till 1992: rain had always been the great equalizer within a race, pretty much making all cars closer to another and allowing drivers of lesser cars to shine due to their skills.
In Doningron '93 this was not the case at all anymore, if fact it was the opposite.
You had roughly the following cars in the starting field:
Class 1: Cars fitted with traction control and active susspension
Class 2: Cars fitted with traction control
Class 3: Cars fitted with active
Class 4: Cars without any of these aids.
In that race, Class 1 and 2 stood out above all other cars, no matter who drove them.
Senna himself stated that this particular race was kind of easy for him because of the traction control he had while so many other drivers had not. can recall having read something about a grand total of only 8 cars been fitted with traction control in that race. Williams was one of course.
But all other cars not, which effectively virtually eliminated them from being a factor in that race. Something Like Brazil '81 when Surer brought in a hopeless Ensign in 4th due to his skills was impossible at Donington.
Senna himself had more praise for his other rain races in which he was victorious or excelled (Montreal '89 comes to mind)
Ravelling about Senna beating everyone that race so handsomely isn't fair to the majority of the field who simply lacked the tool needed that day: traction control. Kudos to him for acknowledging this all the time.
This race, and the aftermath of Brazil '93 are the two rain races in which the field had been the least equal of all rain races ever held