http://www.businessinsider.com/the-f...-combat-2013-3
According to an article published by the Washington Times, the F-35A, the Conventional Take Off and Landing version of the Joint Strike Fighter, would be defeated in aerial combat because of its current shortcomings.

Grounded again with engine problems, over time, over budget, HMDS problems.

Considering the above mentioned F-35′s flaws (and all the shortcomings highlighted by the report…), the kinematic performance of the (recently, once again, grounded) stealth fighter, is the least of its problems.
Aviation journalist David Axe has published an insightful piece about Lockheed Martin’s marketing efforts to keep up “the much-delayed, over-budget” F-35 Joint Strike Fighter reputation.
SEE ALSO: How The F-35 Turned Into Such A Disaster >

The Eurofighter looks more promissing every day and lots cheaper as well ;)