I find that to be a very peculiar statement. If an airframe's performance can be determined solely by its engines, then JF-17 would 50% of a MiG-29, and Hurjet would be 50% of a super hornet.
Unless the hurjet goes through very significant redesigns, I doubt hurjet would perform anywhere close to the Gripen-E in terms of flight performance. Design wise, Hurjet makes use of a traditional layout with a relatively high aspect ratio wing, very modest wing root extension, unadjustable serrated boundary layer intake, suggesting that while the jet probably CAN reach supersonic speeds and perhaps have certain high AOA capability, it is primarily designed to operate in stable, low AOA, subsonic flight, as it should as a trainer/attacker. The fuselage is significantly shorter and thinner than the Gripen-E, while the aircraft have fairly low ground clearance with the gear down, suggesting relatively low internal fuel and no place for under-fuselage dump tanks, again, suggesting a focus on being a maintenance-friendly training instead of a combat jet. On top of that, the position of the canopy for the hurjet is fairly close to the nose, giving the pilots good visibility at the expense of space for a powerful radar with large aperture.
Given pictures of the mockup with payload, the Hurjet's combat variant should feature 2 wingtip hardpoints and 4 hardpoints under wing, with the inner-most able to accommodate dump tanks a larger A2G payloads, while the outward hard points designed for ~250lb bombs or perhaps more infrared missiles. This is quite modest compared to the Gripen-E, but suitable for a light trainer/attacker.