Also it seems you're going with raw ilvl for gear score, however there are superior items with ilvl200 as well as epic. The epic items are far better than the superior and should definitely have a stronger weight. Going by the current system, someone in full ilvl200 blues could share the same gear score as someone with full ilvl200 epic gear. You and me both know however that there would be a huge stat difference between the two.
Please find someone with full blue gear item lvl 200 ,and compare that person with char that have full epic gear item lvl 200 ,you will see that your thought isn't correct . Number beside items are just a Blizzard item level . Enchanters get +15 points per every ring (if they enchant them properly of course) simply because that items are superior then compared to unenchanted rings . Every profession have some benefit ,for example your enchant is quite superior compared with one that i can get ,and that costed you just a Snowfall Ink .
The fact is, even with same item level different quality gear (uncommon, rare, epic...) will get different score, even though it will show the same item level on Character sheet. Also, same quality PvP and PvE items give different score. We might work out a way to show that current ilvl does not represent the actual score always, we'll see in a few days Enchanters got some boost in score, but we'll find a way to boost other professions too very soon.