I would chose weak and lean anyday who cares how much weight you can move, although my body is naturally strong but likes to hold on to fat. I wish i was just really tall and skinny and didnt have to work so hard for my looks.
Depends on muscle mass. id much rather be a little fatter with muscle then just a skinny guy. Like i'd take a more "lumberjack" build over a Mclovin build. If were talking strong and fat and muscular v.s. weak and lean and muscular then def weak and lean and muscular.
In a perfect world...lean and strong...but if I had to choose between the two it would be strong and fat...you have to remember that fat is a relative term...what we consider fat, is considered in good shape by the general population...
If done correctly you should not get weak until your body gets very lean (5-7%6%) or depleted. I am no expert but i lost 88lbs for a contest back in October (291-203) over 21 weeks. I did not get weak, until I hit 240-250 range, and then I think it had more to do with eating 50 grams of carbs daily M-F while trying to work full time and doing 2 hrs cardio daily. And the weakness was more self limiting due to the fact I was feeling all the stress in the joints and I did not want to tear anything (albeit I had mutliple pec and quad strains , shoulder pain, and lateral epicondylitis.)