1- PAF has access to F16 and J10 both and already evaluate many more aircrafts of this league.
2- There is some delays/Urgent needs and there is some satisfaction on J10 performance that's why it's coming.
Your this reply is much better (Although not perfect yet) than your first comments because now you did some research on the discussion.
By the way do you really think single WS15 engine jet can carry 4 PL10 and 4 PL15? Even J20 didn't have that space being made for 2 WS15 engine.
(P.S...
How VTOL going to be cheaper? (Keep single engine / double engine debate aside)
Also What benefits VTOL gives to Pakistan? (Any Cost/Benefits/risk analysis would be great).