I'm sure that if there was a super - Kevin McCurley (who imported the first spider, from whom all spiders are descended) bred enough spider to spider in the early days to figure out pretty quickly that there is no super.
On top of that, there have been multitudes of people that have come before some of you who also said "someone should breed spider to spider and see".
In other words, more than enough breeders over MANY years have tried the breeding. It's not a new concept. To date - no one has produced a super spider.