Yes but had Senna been around today, he would have been shaped by the same forces as other drivers today.
The Senna born in 1960 would be a different Senna to one born in 1987. To that end, Senna's contemporary would have been Vettel.
The sheer and utter ruthlessness that 60 Senna showed would have been identical to an 87 Senna. Conditions are vastly different, but I still suspect that our hypothetical Senna would have been in a top team (probably in Massa's or Webber's seat) and been winning GPs anyway.
Senna did make a Toleman score fastest laps and did win grands prix in the Lotus. Piquet Jr. did neither the Renault, even though Alonso proved that the car was capable of winning grands prix.
Bellof would have had to have passed both of them. That's a tall very order indeed.
Yep, people always go on about Senna in that race but Bellof was faster than both of them and another amazing talent who life was cut too short. Senna was the kind of driver that would have been in a top team no matter what and, in my opinion, he would have kicked Vettel's ass.