how does the J10 compare to a Grypen?

some questions on the J10 and the Grypen:

how do they compare in agility?
how similar is performance like climb and ceiling?
what armament options do they have?
how would they compare in a dog fight if it happened(this is theory) after getting past bvr combat?
what is the development potential of both jets?
which has the most advanced avionics and radars and systems?

ive seen digital artwork online showing the J10 with missiles under the fuselage like Typhoon has but in photos only underwing weapons. can J10 carry 4 under fuselage missiles and a tank too? with under fuealage missiles the weapon load would be bigger than Grypens underwing ones.