The articles you posted mean nothing. They do not disclose anything significant pertaining to the acquisition and operational costs.
The fact of the matter is, aircraft acquisition is not merely about upfront payments. Training, fleetwide integration, set up of maintenance base account for a major share in operational costs. European jets are way too expensive, starting from the flares and chaff batteries to engine overhauling costs. Furthermore, PAC will not be cleared anytime soon to touch Eurofighter. This means for every small upgrade or maintenance related matter, we will have some bills to pay in Euro's.
Lastly, T1 and T2 Typhoons have a very limited ground attack capability and they cannot be upgraded without incorporating structural changes. One of the prime reasons why T1's are being phased out.
This is just a sensational notion nothing more. Acquiring some 24 odd F-16 Block 40/50's at the same price from US will exponentially increase our punch with little or added costs.