Well it is totally different! I think I would divert immediately if fuel was doing funny things in tanks, you'd already lost one engine, and a second engine started failing, with a second fuel tank showing empty! A serious incident definitely requiring the action taken. What we are talking about here is a simple engine failure with no external damage (these engines are covered by firewires in the cowling, so any breach of the structure of the engine would illuminate overheat or fire warnings. Ample protection, a simple engine failure. 3 left working healthily. No problem.
Blame Microsfot for the Virgin one!