We all have our own preferences on RPGs. Just because FF7 had tremendous graphics for a game at the time doesn't make it a classic. Granted it did introduce a lot of people to RPGs in general but there have been other successful games before it (Suikoden, Chrono Trigger, Star Ocean and Tales of Phantasia to name but a few all of which have been hugely successful in their own right). In the case of Suikoden it is the only console RPG game to date that has it's own dedicated fan book released quarterly each year (named Genso Suikoden Shinsho) which says something for it's popularity.
As for Angelus' theory I'm afraid it doesn't stand. GundamGuy has already mentioned that some of the other FF's in the series matched it in sales. And as for what type of other games had the same type of battle/magic system? Well the answer is simple: tons of them (even to this day). The rare exceptions are the RPGs that try to do something different with the battle system (Shadow Hearts and Star Ocean spring to mind). It is unfair to compare graphics as times change. Look at the difference between FF7 and FF8 (which were being made together around the same time). That rather implies that FF7's graphics are not breathtaking for the time. Other console RPGs pushed the graphics to the max (Star Ocean and Tales of Phantasia did for the SNES).
Angelus. What gives you the right to say that people who don't consider FF7 revolutionary to stay away from RPGs? If you have been reading the people who don't consider it revolutionary (myself included) have all stated that they like it but it isn't the great big classic game that it is made out to be. Tons of RPG games have been popular before it (especially through emulation on the net - Chrono Trigger being one of them which was made a good year before FF7). The overall feel of FF7 can be a bit depressing and the game is slow to start with. The whole storyline is not very original and has been used in all previous FF games to some extent (just replaced with different meanings)
But as Cookie said this whole argument is remote really as the group that are against it being revolutionary will remain so and the group that consider it revolutionary will still consider it as such.