Yes, if Bastianini can be fast at the end of races due to tire preservation or an ability to ride worn tires MM very likely will be able to do the same or better.
What will be interesting to see is whether these bikes really do let go unpredictably as Bagnaia claims and as Martin also claimed last year, history records MM can both finish consistently in his case even on a sub par bike and can ride a bike right on the edge.
Martin deserved the title, but I felt a little sorry for Bagnaia who is probably the marginally faster rider. He got into his end of season mode too late this year, although Martin was correctly not pushing things in the end of season races given the lead he had.
As the points were at the end of the season the two unnecessary crashes with the Marquez brothers did cost him more than Martin’s margin of victory, and I do wonder how helpful his mentor’s early season advice in regard to how to deal with riders named Marquez and antipathy towards riders so named was.