I agree with you for a tractor like the small 22 HP 1400 lb lift unit that you show. You make a good point at the end, larger tractors may be able to take advantage of the larger opening while staying with the narrower
grapple. To me this "which is the best
grapple?" question is kind of like asking "which is the best bucket for my excavator?". My answer to the excavator question would be "it depends what you are wanting to do with it". Narrow L bottoms have an advantage of maximum lift per lb of
grapple weight and per dollar spent. And of best digging ability for small to medium machines. Wide L bottom grapples have an advantage of maximum total volume capacity and maximum cleanup swath. Think storm cleanup or post dozer cleanup. Rake grapples have an advantage of forward and back raking, with better root grubbing ability. So my answer to the question about which is the best
grapple would be "it depends what you are wanting to do with it".