No 22-25 ton is gonna resist any hit from any vehicle armed even with a 40mm canon with armour piercing rounds.
The most modern IFVs in Europe has all round protection against 14.5mm Russian HMG fire, and frontal arc protection of 20mm-30mm Armour piercing rounds. And that itself makes all of them heavy above the weight of 32tons. Even with ERA at STANAG level 5 protection those European IFVs weighing upto 42 Tons provide frontal arc protection from older generation tank ammo only.
If we have WhAPs today with a Bofors or even Russian 57mm with armour piercing ammo, they would be alone taking out those Chinese light tanks.
See the term light tank is a misnomer. It is at the end of the day just an APC/IFV with a larger caliber main gun. And the problem doesn't stop here, even that main gun gets restrictions as it cannot be too heavy. So even those guns aren't utilised to their full potential.
Pretty much. The Sprut is dead. Even the Russians don't want it. The paratroopers are instead going for the BDM-4M upgraded with the T-90MS main gun. It also carries some troops, so this is the only good tracked option available.
The alternatives with a big gun are Stryker MGS, Centauro or the upcoming French Jaguar. But they are wheeled and will need an APS with the ability to stop tank shells. None of them are survivable against the Chinese Type 15. They don't have the firepower of the T-90MS's gun either, or have to be modified with one. Of course, an Indian option like the WhAP can also become a contender then.
The MBTs are to prevent the Chinese from coming deep inside India. The light tanks are needed in places where the MBTs cannot operate, especially when on the offensive. We need something that can take out their tanks, and you need tanks for that. Take Pangong Tso for example. The only alternative is to either send the tanks over by boats, which is not possible, or air drop them. So we are choosing the latter. And for that we need lighter tanks with a simpler logistics chain. Same case with a lot of other areas. Hence the need for an air-dropped tank.
Neither the BDM-4M nor the WhAP can survive against the Type 15, although the BDM has the ability to shred the Type 15 with its massive gun. And then, the Type 15 is set to get an APS, so defeating it with missiles is going to be extremely hard. Hence the need for a tank with a big gun. And whatever we buy right now from the market is going to be outclassed by the Type 15 anyway because of the APS advantage.