Airsound,
The pylons are not stealthy but the gun pod is, allegedly. Look in any book or manual concerning stealth and LO principles and the first rule is to avoid 90deg angles. The pylons don't help there.
I wouldn't like to guess what the relative LO merits are between a Typhoon and the F-35B in that picture because it is an incomplete story in my opinion. You'd only be in that configuration after expending external weapons so you'd take a bigger LO hit if those each had weapons on. Similarly you'd then need to compare it to the LO signature of a Typhoon full of AIM-120, ASRAAM and EPW/PWIV.
If you need stealth against your foe then the underside would be as smooth as a baby's bum. If you don't need stealth for whatever reason, and you're required to do, say, CAS then load her to the gunnels with useful mixed load (6 heavy bomb hard points, 4 missile hard points + gun) and off you go. Put multi-store ejector racks, e.g SDB, on and you can carry a lot. Clearly issues at sea for 'bring back' in such a heavy fit but if you know you're dropping it's not an issue coming back empty.
Last edited by ICBM; 24th Jun 2012 at 10:21.