DiPietro and Luukkonen are better just off of the top of my head. It's not even close. There are probably a few others who are good as well.
That being said, he is more than good enough to steal a series, even from the top teams. SSM has an easy path to the conference finals unless they play London before then. It sounds like OS and Guelph are selling, so that means the only London, SSM and maybe Saginaw (who could add to their group for a run this year) would be the ones competing in the West. Then just look at how much of a powerhouse SSM was last year, but they ended up losing to Hamilton who had 23 less points than them in the standings.
I think SSM buys, but they will be strategic buys. They will not waste assets on rentals. They will look at 99's they can bring back as OA's. There are a few teams that are selling that have too many 99's to bring back for next year, and I think SSM could add a top 9 winger (i.e. Luke Boka from Windsor, Bradley Chenier from North Bay, Jake Durham from Flint, etc.) and top 4 LD (i.e. Jakob Brahaney out of Kingston or Kade Landry out of Hamilton) to round out their group. It'll probably cost a few young roster players (i.e. Calisti or one of the 01' forwards), and maybe a few third round picks, but since SSM has done so well with hitting on later round picks in the past few years, it does not hurt them as much as it does other teams.
I have already said this earlier though so I am just repeating myself really.