I'm very interested in this comparison but as an example did Zmarslik give it 100% behind Woffy in the heats ? He knew he was in the semi, had gate choice so there was no need to take any chances. Under the old system he would have been flat out.
The 2020 system allows a rider to coast in his last heat or two, maybe try a set up for the semi, rather than have to get every point at all costs. I'm sure it wouldn't happen but the system could allow a bit of team riding to get a mate into the semi.