Tejas Mk1 has 3 axis Digital Fly-By-Wire (roll, yaw & pitch) while the initial versions of JF-17 only have pitch axis digital FBW and not digital in other two axis. Tejas’ control law is one of the bests in the world in general
The flight characteristics is something that is continuously improving because the major cause of delay was also the biggest advantage, because the west denied us access to whole algorithms which has led DRDO to develop its own digital FBW here in India itself. It's all ours only.
That means every hour an LCA flies, more data is collected and the software is improved. This has already lead to an improvement in Angle of Attack by 1.5 degrees. The Computers have been improved to take control of the aircraft and bring it back into flight envelope.... So hopefully Mig21 like accidents won't happen during its operational
Again it's not the world beater, but it will do fine
If we give up now, then in few years everything we have learnt will start to get lost. It's important to stick with this project untill the next one gets into production