I'm posting this having not actually read this yet... First off the methods used for sealing on Naruto and Gaara are radically different accounting for them both being sealing techs.
First, the sandy nutjob has been in at least to previous hosts and has been extracted (killing the host) and stuffed into a kettle for storage inbetween sealings, where Naruto is the first and only host. Second, the person who installed Gaara 's tenant is still alive over a decade later, where as the one who installed the 9 tails literally fed himself to the Death God (who shows up inperson). Third, Gaara had his powers on constantly and cannot turn them off... where Naruto had to be old enough and be flipping out to get anything at all out of the seal. Fourth, Gaara has a blood thirsty, nutjob ranting in his head and eating his sanity... where Naruto flips out when he is enraged. In short Naruto got his seal as done by Blizzard with an extention pack (upgrades that go impove the old version and a separate mode for using the extention)... and Gaara got a seal as done by AOL programmers making an update (the programs are barely compatable, constantly fighting for resources, and your better off with one program or the other).
As for the knowing what chakra was... even though he didn't know the specifics or the vocab, Naruto did know how to manipulate it. So that may have been a case of Sakura being a walking textbook rather than it being a more than random factiod for most genin with on academy education. Also, its made clear that Sexy no Jutsu feels like what it looks like, he got a super pervert who is use to have boobs pressed into him at least in drinking establishments... however I can't think of where it is covered if normal henges are tactile or not. So we can't really know if the tech is a step forward or not for a 'henge' tech.
First, the sandy nutjob has been in at least to previous hosts and has been extracted (killing the host) and stuffed into a kettle for storage inbetween sealings, where Naruto is the first and only host. Second, the person who installed Gaara 's tenant is still alive over a decade later, where as the one who installed the 9 tails literally fed himself to the Death God (who shows up inperson). Third, Gaara had his powers on constantly and cannot turn them off... where Naruto had to be old enough and be flipping out to get anything at all out of the seal. Fourth, Gaara has a blood thirsty, nutjob ranting in his head and eating his sanity... where Naruto flips out when he is enraged. In short Naruto got his seal as done by Blizzard with an extention pack (upgrades that go impove the old version and a separate mode for using the extention)... and Gaara got a seal as done by AOL programmers making an update (the programs are barely compatable, constantly fighting for resources, and your better off with one program or the other).
As for the knowing what chakra was... even though he didn't know the specifics or the vocab, Naruto did know how to manipulate it. So that may have been a case of Sakura being a walking textbook rather than it being a more than random factiod for most genin with on academy education. Also, its made clear that Sexy no Jutsu feels like what it looks like, he got a super pervert who is use to have boobs pressed into him at least in drinking establishments... however I can't think of where it is covered if normal henges are tactile or not. So we can't really know if the tech is a step forward or not for a 'henge' tech.