I agree with the majority of the answers above. Every client can not be treated the same because every client will not respond the same nor is every action beneficial to each client. My T has told me that she has more "loose boundaries" (my phrase, not hers; but in summary she shares more personal details with me, is less on guard, encourages email, etc.) than she does with some of her other clients. That pretty much suggests that she doesn't treat them all the same, but I do believe she (and hopefully your T) treats them all the best way she knows how in order to get the best possible results.

It does sound like you have some underlying issues already with T, so perhaps a change is in order anyways - and this thing with your friends relationship with T vs. yours is simply fuel to the fire.

I get the whole telling your friend everything, because when I first started I did as well, but I think that the more intimate the relationship with T and more effective it is (for me at least) the more personal and exclusive the details of our interaction become. Maybe neither or you are truly at that level yet.