Looking at the current state of Pakistani economy I don't think PAF will be getting a stealth fighter jet in near future. BTW stealth can be countered easily thanks to the advancement in radar technologies. Indian Swordfish radars can detect a tennis ball size object from several kilometres away. TACDE will definitely work on tactics to counter these stealth aircrafts.
What your talking about is the radar stealth which is becoming more affordable to track and possibly produce.
Frankly we don't really know how they'd fare against each other, jf17 too was pulled out of Bahrain show where Tejas performed.
The only thing the 2 aircraft you mentioned have in common is their size, allowing them to fit F-7 cold war era bomb shelters, not sure about the J-10 and fast scramble to short take off. However if Pakistan required a small interceptor the only superior choice would have been the Gripen and Tejas. I don't see many other options, at the very least they got something that fits their survival strategy with numbers.
But for some reason they won't induct a single one themselves, to replace their ageing low level fighters like j-7 & 8, q-5 etc. despite jf17 or j31 being cheap enough for them to buy in hordes & swamp the enemy by sheer numbers.
Wonder what that reason is...
Chinese don't have front line bases close to any threat perhaps maybe against the Russians and Indians but still plenty of distance between China central and the threats.
The J-31 will definitely be required on aircraft carriers, if it makes it. J-10 has only 1 engine known for reliability issues, the J-20 and Flankers are too big and hold up a lot deck space. Not to mention the extra stress the put on the carrier landing runway.
Indian MiG21 Bisons are quite different from what were shot down during Vietnam wars. Bisons are the heavily upgraded version of MiG21 and are quite capable aircrafts. During 2004 Cope India excercise Indian MiG21 scored kill against American F15 and in 2005 against F16s.
I believe in the situation the F-15's and F-16s where flying blind with out AWACS, although I could be wrong. Agreed though that Bison with R-73 and R-77s is capable. It did its function so far. Buying IAF enough time until the LCA matures.
Hahahahah.......F-4 phantom in Vietnamese war in 1986 era shoot dozens of Mig-21s and you are saying it shoot down it..........during even in exercise...hahahahahah
Yea, a variables, but given Asia, the Bison is still relevant. Pakistan, China AFAIK still fly aournd those F-7s, F-8s. Also note the F-7 production ended 2014 exports and 2004 for PLAAF orders.
They already have J-10 and J-20 for this purpose
they don't need them these are there co projects to help Pakistan.
J-10 is heavier, more expensive, and probably a greater down time and warm up time. Could limit the response of the scramble. So no, J-10 and J-20 though have Fadec engines also have larger engines meaning reduced time to take off. They are not exactly quick response interceptor meant for front lines. Something China not longer needs or can afford to overlook.
Those are high end aircrafts. Unless PLAAF is reducing its size, hundreds of mig-21 variants will need to be replaced by something lighter like j-31/jf-17 in large numbers. We'll have to wait & see...
They already filled thier numbers with J-10, not exactly high end.