the heated steering wheel pulsed on and off for all models afaik but never got cold. It went from lukewarm to blazingly warm. Some said too hot, I thought it was just right!
The reality is the answer to the question for most is simply the LEAF will be cheaper and easier to get. I think the base model Tesla is the only EV that is worth the MSRP asked. LEAF even with low priced features added still not worth the price despite several thousand price cut from 2017 but then again, who is going to pay full price? It won't happen. The LEAF will have oodles of incentives and the Tesla won't excepting maybe half a fed credit if you are lucky.
Both are great cars and very few major wants that can't be had another way.
Now my 2016 did not have heated steering wheel but I made it work (while it lasted) but I don't live in upstate New York either. That weather changes EVERYTHING!