Southern Ontario and Southern Quebec put together look a lot more like Europe than California.
Presumably you mean the auto-dependence and design of built-up communities and not the natural landscape and climate (although there are parts of Europe that have the same climate and geography as California).
In either case, you would be wrong. The built form of Southern Ontario and Quebec primarily consists of automobile-oriented suburban sprawl and segregated commercial-residential uses, with the vast majority of buildings built since the second world war. This sounds more like California than Catalonia. Laval and Pickering have more in common with Livermore and Pomona than Libson and Prague.
Sure, about 1 million people in Greater Toronto and Greater Montreal each, and maybe 150,000 people in Ottawa and Quebec City live in some neighbourhood where you can plausibly walk to most services and have reliable public transit options to get you to the main railway station, but that's no different in California. I fail to see how the residents of Parkdale or the Plateau lead a more European lifestyle than the residents of the Mission District, San Francisco. In both cases they certainly lead a lifestyle that only a minority lead in their respective city regions.
Actually, I would argue that, in many places, California is more like Europe (rail-wise) than Ontario is. When it comes to connecting mid-size cities of relatively close proximity, you can't take the train from Kitchener to Hamilton or Guelph to Cambridge or Brantford to Camrbidge, but you can take the train from Escondido to Oceanside and from Stockton to San Jose. California also has more frequent intercity rail service than anything in Ontario and Quebec. There isn't service anywhere in the Quebec-Windsor corridor with the frequency of the Capital Corridor (15 trains/day from Sacramento to Oakland including service every 40 minutes at rush hour) or the Surfliner (11 trains/day from LA to SD paralleled by local commuter rail services along its entire length), unless you count the stretch from Toronto to Kingston where trains don't run at regular intervals and don't stop at the same stations.
For someone who rode 12,000+ miles in Europe last year, I found a lot of those call HSR were slower than using GO.
I find that very hard to believe. The fastest scheduled GO trains - like the Express runs to Oshawa - still only average 80 km/h.