Actually, certain aspects of technology, they are far ahead of us in small arms and naval technology, in strategic weapons & rest of things, we got overwhelming advantage.
Come on don't act like teens. We got the quantity, they got the quality. Although we may win, damage you'll get after a war with them is unacceptable. At least for few decades.
We have got both quantity and quality.
Around 1600 T-90S which can hold their own and even get the better of Chally 2 with the Refleks from 5000 meters out.
Then we are ypgrading another 1000 T-72 with uprated power packs and the new K5 type ERA .
Then we have 220 Arjun Mk1 and Mk1A in service/on order.
Around 1700 BMP2. Yes they are inferior to what the British have but they gets the job done. This is the only kit in the Army arsenal which is qualitatively inferior.
Come to artillery we have similar if not superior stuff. With induction of Dhanush and the Atags we will have superior artillery assets. This is not to mention the huge no of units we have.
Then there are Pinaka mk1/ mk2 and Smerch.
Brahmos. 4 regiments of them with 100 missiles in each.
Prithvi-1 and 2 missile groups which can be used in c nventional role.
When it comes to Army Aviation, ALH isn't in any inferior to the Lynx. Then we have Cheetah, Chetak and Cheetal which fill in niche roles.
Chinook and Apache will give us tremendous capabilities as far as organic heavy lift and heavy close air support is concerned.
Coming to IAF vs RAF, the Su-30MKI isn't no slouch either. It's superior to the EF Typhoon tranche 3 as far as air to ground is concerned. Then the N011M Bars is being continually upgraded. It's superior to the Captor M in most respects.
Then we have MiG-29UPG Mirage 2000I/TI and Jaguar DARIN-3. MiG-29 has the IAF's first Aesa based RF jammer whereas DARIN - 3 will get the ELM-2052 aesa.
Rafales are coming. And Tejas mk1a will have excellent air to air and air to ground capabilities.
Now look at RAF. 160 Typhoons. To Kas are being phased out. And just 35 F-35B. Talking about firm orders. Look at their IADS and Sam network. Non existent.
We have everything from the vintage Kvadrat to modern Akash-1 in the ESHORAD and short range categories, Mrsam and then the ultra long range S-400 has been ordered.
Then there are SpyDer, OSA-AKM.
We have a robust BMD system too. Either operational or soon to enter service.
The RAF won't last a week against the IAF in a full spectrum war. Now if we consider our multi tiered Sam network, then it's more bad news for the RAF.
The UK Army won't last more than 3-4 days against the Indian Army in a 71 war type conflict.
Now coming to our Navy, the Kolkata class and the upcoming Visakhapatnam class are superior to the Daring class in anti surface warfare. It has similar anti air capabilities. We have the P-17A coming. The P17 and Talwar and it's sub classes are superior to the Type 23 frigates.
Their only Trump card is the two QE class carriers with their complement of F-35B.but these two look great on paper. Against Brahmos and its sisters they won't last long.
And their fleet of SSN. That's one descent piece of capability they have.
In an all out conventional war where nukes are out of the picture, we will be annihilating them in under a week. Besides they don't have reserves to offset attrition. They don't have the nos.
UK would be hard pressed if she is to herself face against a country like Iran or even Vietnam.
India is far far off.