Canon started putting electronic cable release sockets on the Rebels starting with the Rebel X and XS in 1993. And they gave the Rebel partial metering from the very beginning with the first Rebel in 1990 (in addition to matrix and center-weighted metering). On the Nikon side, to this day Nikon's entry-level film SLRs still don't offer cable release compatibility. The N50, N60, N55, N65, N70, N75 all lack a cable release socket of any kind. And the only metering option on the N50, N60, N55, N65, N70 were matrix or center-weighted-- no partial metering.I'll never forget my first Canon film SLR. It was a Rebel S from
the early 1990s. This was when Andre Agassi was peddling Canon
cameras in slick TV ads, and Nikon had no ads on TV at all. The
Rebel S had a bulb setting but absolutely no way to fire remotely
by cable. The manual blithely explained that you can use bulb to
take long exposures. I guess Canon expected people to keep their
finger on the shutter button the whole time. I longed to take
nighttime long exposures but couldn't, the whole while the bulb
mode just sat there taunting me. I doubt Nikon would have done that.
Also, to this day, none of Nikon's entry-level film SLRs can do high speed sync flash (very handy for daylight fill flash). That's a big issue when your max sync speed is a whopping 1/90s (as is the case with all the Nikon bodies from N50 to N75)! Canon's Rebel bodies started doing high speed sync flash up to their max shutter speed (1/2000s) back in 1999.
So in reality, if you look back at Canon's Rebels versus Nikon's equivalents, there was a heck of a lot that Canon was doing that Nikon wasn't doing.