That Saurav Jha is a Bharat-Rakshak fanboy. Where is his reference that it has achieved 26 degrees? There is a lot of "uncle-aunty in ADA HAL IAF DRDO" sources in that forum which is taken as fact.
And the brochure, is typical bullshit. You can see clearly that's the target which they are going to achieve, not achieved. for example you can see the BVR missile loadout configuration but LCA has not yet carried or fired a single BVR missile to date.
Edit: Hmm.ok 24 degrees has been achieved from the IOC link. That's cool.