Weight is sometimes undervalued by new tractor users who, at times, focus on HP. As an extreme example I have a 25hp zero turn, and a 9N Ford that’s slightly less. Pulling a mowing deck, they’re not incredibly dissimilar in power. For PTO type work (chipper, generator, etc.) to a large degree HP is HP and weight is of little relevance. Pulling an implement, uprooting a small tree with a chain, pulling a trailer… any drawbar type pulling: the 9N is vastly superior to the zero turn. Of course the 9N has loaded R1’s massively larger than the zero turn’s little turfs. The 9N weighs 3 to 4 times what the zero turn weighs (I don’t know the exact weight of the zero turn but it ain’t much).
While the BX v L in similar HP range isn’t quite that much of a difference, when it comes to anything involving pushing, pulling, or lifting weight is incredibly important.
When it comes to not damaging a lawn, trails, etc. with a heavy machine shod with aggressive tires, the lighter machine is preferable.
For pushing and pulling, tires are also very important. R1’s clearly are the winners there. But in my case, they tear up not only our lawns, but also our trails. The much heavier L4701 with 4WD and loaded R4’s causes much less damage to our trails than the 9N with its 2WD and R1’s, but the L is still a big fat pig on the lawns just due to weight. The R4’s are a good compromise for heavy landscaping/loader type use. Less than ideal for pulling implements such as discs and plows in fluffy or muddy fields.
Unless you have one, and only one, job for the machine, it’s a balancing act between weight, tire choice, and HP to achieve adequate performance for all tasks. Worst case, you end up with a “big” tractor for heavy work and a small tractor for a lighter touch. Which is why I’m likely to add a BX to our stable in the next year or so to provide an adequate tool for lawn type maintenance and landscaping, yet have no plans to get rid of the L for the heavier chores on our 70, mostly wooded, acres.
I think for most of us here, whatever we have is a bit of a compromise that isn’t ideal for every job we have for it, but is adequate for every job we have for it.