I also think J10A can defeat MKI in most ocasions , because J10A allready had a very smaller RCS than MKI, that's the reason J 10A locked MKV for tens of times while MKV can not find J10A, as to MKI, things still not changed. besides, MKI have front wing, so the RCS maybe lager than MKV...
if u can,t see the pic , please check this link posted originaly:
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(may need regist)
Right! In another recent air countermine between J10A and SU30-mkv,J10A had locked SU30-mkv for times while SU30-mkv stiil not find where is J 10A.