I didn't said that thrust would be an issue, just that there is a big difference in what the GE414G offered wrt to performance increase to Gripen, compared to what an upgraded RD93 would offer to JF 17. Also, if that bit of performance advantage over WS13 would be enough for PAF to fund the Russian varient.
The Chinese engine and independance of Russian spare supply or future upgrades is not only important for PAF, but also for any potential export customer and that's what makes WS13 actually to a priority upgrade, even for PAF imo.
Mighf have to dig in to get some old news but this has happened before as well. The Chinese too look after their own interests as they have reneged ontheif commitment to buy the JFT. So things are never as clear cut as that. The bottom line of my post was that theze are my own feelings. In international trading you would be surprised as tohow much gets hopped and changed based on international interests and likings. Idont think PAF will ever be influenced into making an engine change just because its chinese. It might not bedone in as crass a manner as I have alluded to. However if an uprated RD93 is offered by the Russians PAF will almost certainly ask the chinese to match the specifications.
Araz
I don't think PAF is in the position to field a competition and take leverage of the Chinese, since they are a partner of the JF 17 too! They can simply veto the integration of an upgraded RD93 if they want, or leave PAF with all the costs for it, including airframe modifications.
Also keep in mind that PAF is dependent on the Chinese wrt further upgrades and modernisations of JF 17, because China has no own requirement to do it, since they don't operate the fighter and no other export customer has selected it yet. So when you start to put pressure on the Chinese, they might get even less interested in JF 17 and modernisations and PAF might lose more than they would gain of the Russian engine.