Why is it clearly doctored? Do you have the original photo? As for that website, this is by no means a statement that the Su-30MKI cannot carry 3 Brahmos missiles.
It made the rounds on the forums a year or so back and an original photo was located, demonstrating it was indeed a PS. I'll see if I can find the original photo, but until then I think you can trust my word on this one. (edit: Sinosoldier posted it)
As for being "clearly doctored" -- honestly, I can't describe it. It's like a sixth sense after nearly a decade of looking at PSed and potentially PSed pictures of PLA equipment that I (and I'm sure other people here) have been able to pick up on obvious PS jobs pretty easily.
The missile and the aircraft are different textures, the light hits them differently, in fact the missile looks like a PS from a drawing or CGI compared to the aircraft itself.
This is the same logical fallacy that claims that J-15 cannot perform strike missions off a ski ramp just because we haven't seen it yet.
That is a fair point, however in this case we do have official statements from the IAF saying Su-30MKI is only expected to carry one standard (2.5 ton) Brahmos only.
I've heard they may be developing a lighter version of Brahmos so a single Su-30MKI can carry more missiles, but only one standard 2.5 ton missile can be carried on centreline
The Brahmos itself is barely integrated with the Su-30MKI, and you already expect to see 3 missiles hanging off the fighter. Let me ask you this: how many photos do you have of an AIRBORNE Su-30MKI with just ONE (centerline) Brahmos?
Fair point, Brahmos is still being integrated with the Su-30MKI and at this stage I think they're still doing initial test flights.
That said, I don't think I've even seen a static display of Su-30MKI+Brahmos where more than one Brahmos is carried, which is what I was referring to in my last post, though I suppose the word "fielded" is not correct in that regard.
edit: btw I can see I might have waded into some kind of discussion about whether Su-30MKI or a Flanker or a JH-7A "can" carry a Brahmos or YJ-12 or whatever on their wings... at this stage I have no opinion on that. My last post was only to point out that the JH-7A+YJ-12 picture is most definitely a fabrication, and that at this stage we also have not seen any physical indications of real Su-30MKIs being tested (on ground or in air) with more than one 2.5 ton Brahmos either.