@wutangclan, I'm not sure how many "Like for Like" experiences you'll find on here, as I think they are a bit rare among "us." In your case it sounds like you went with a classic size change that many have made {more so in the past}, ended up with a taller and softer sidewall, a smaller footprint.....and made a change. Right? Still good to know that they OEM size was better in the dry, and as good in the snow.
So in your case, it was change in size, and I guess now a recommendation to go with the OEM sizing. For your vehicle, and where you are.
Now, my experience may be more similar to some others in this community. We have driven three Toyota Land Cruisers, a 1998 though our present 2003, a total of about 500K winter miles. We have had a lot of different winter tires. Much of that driving has been the same 500+ mile weekend ski commute. Some has been on cross country trips. Granted the vehicles have had at times freshly renewed suspensions, fresh brakes, and some have had 16" tires, others 17". A lot of variables depending on how deep in the weeds one goes. But I think that the input of why we liked one tire over another is reasonable.
Our son has a V6 Tacoma, and has owned it for nine winters. He runs the exact same tire size as the Tacoma, so he and I compare notes. He has put about 120K of winter tire wear on the truck. He is typically in a more severe winter environment and drives less. Shorter hops.
One of our other cars is a 2005 Legacy GT wagon, our daughter drives a 2007 Outback XT, and our son's GF a 2006 Outback 3.0R. All since new. My hunch is about 180K of winter driving on them. All with snow tires. Multiple sets. So, once again, I feel "pretty good" about talking about various experiences. Two of those cars have spent winters in New England and CO. Denver and the RFV. A lot of I-70. Son's truck has lived in New England, Upstate NY, CO, and Tahoe. GF's in CA, CO.
Our third car does not see much snow, so the input there is of less value. Unless running Nokian WR's in mammal snow is of interest.
So "Like for Like?" No. No scientific data. Plenty of rating agencies do it.......the better ones in Northern Europe. But still, many of us have experience that others hopefully find somewhat valuable. Not that different than the reviews on Tire Rack, where one can sort for an identical vehicle, and by tire. On Tire Rack, you get a lot of people who have driven the tires 500 miles and are in love...or hate. The tire is not broken in. Wax from the tire mold still on the tires, etc. How do you evaluate wear? Or degradation of performance with increased mileage?
I prefer the folks who can more accurately discuss how a given tire performed when new, perhaps 15K into it, and longer, or what happens when the temps are well below freezing, or 60-70 or more, etc. Anecdotal stuff in many cases.
Guess it all could be skewed a bit. I'll take
@ScotsSkier's input, given his driving experience and where he lives any day. If I'm thinking about tires for my 6000 lb truck, I can learn a lot from his opinions, and experience, even through the vehicles are different, and we live on opposite coasts.
Just say thinking.......
This is a community and sometimes I think people think it should be a big data depository.