I think Jobs usually kept up his diplomatic facade when speaking on the record. He was well-kown to throw temper tantrums and tear into competitors' (and Apple's own) products behind closed doors, but AFAIK he didn't really do it in public.
If he had been in a similar situation as Musk was in this interview, I think he would have gone into full-on salesman mode and launched into an explanation why Apple's product is far superior than anything competitors could ever hope to offer. Actual public jabs at other companies were far and few between, and they were usually directed at opponents with bigger market share. (IBM in the 1980s, Microsoft in the 1990s, Google/Android in the 2000s.)
When has Steve Jobs ever walked back his trash talking?
My comment was related to each one's individual laser focus to setting and achieving targets and not about their diplomacy. Apologies for not clarifying