Cheaper to operate, larger in number, deep strike role once air superiority is established, etc etc. Jaguars are very much relevant in IAF inventory for another decade. That role will only be taken by MWF, if it meets the criteria. LCA MK1A can't replace Jaguars, it just doesn't have that fast speed maneuvering capabilities and it'll be a sitting duck in ground operations.
Lca Tejas can fly supersonic at all altitudes..
Tejas is also munueverable aircraft.. with fly by wire systems it can fly close to ground but not that much compared jaguar most important delta wings can return even if significantly they are hit.
Again there max thrust is just 65kn and dry 45kn
Now they even say it's thrust is reduced alot because of aging it very old aircraft older than mirages mig29s. The dry thrust of mirage is 65kn with weight of 7.5tons.
It does carry alot of fuel even more than mirage 2000.
4200liters infact during kargil strike jaguar were not choosen because they did not enough thrust to fly there with enought speed securing itself... The mirage pilot told at war cry who bombed pakis..
It is of no use of its engine are not upto mark
It's empty weight is 7 tons 3.5 tons fuel (mtow of 15.5 tons)
No way with less than 65kn thrust we will send this aircraft for deep strike most of our conflict is in high altitude were jaguar seriously sucks.. although French did send some jaguars for free some jaguars will have 45/65kn retained.
Tejas lacks fuel it's just 2.6 tons compared to 3.5 tons of jaguar, although Tejas with 3 ext. fuel tanks (2x1200+800litres, 2.65ton) can still carry 2x500kg bombs or with 2 fuel tanks can carry 3x500kg bombs..
& Dual engine, higher survivability..
Tejas can replace jaguar it does have some small shortcomings but it more beneficial to replace it with Tejas.. jaguar is of not much use today..