What makes you think you're trading something off? I have NEVER heard of a single Bushnell 4200 scope having any durability issues. I can not say the same about Leupold.
Considering that all scopes basically operate on the same principle, the fact that Bushnell scopes are usually heavier than Leupold suggests that the tube and internals are beefier, making it more durable (assuming that assembly and QC are the same). Generally Japanese and American assembly and QC are not the same, however....
If you had a car that you had to repair daily, but the shop would do it for free and be very nice about it, would you claim that your car was superior to others? Rather extreme analogy, i know, but i just wanted to make a point. If Leupold sold a superior product, nobody would know how good their serivice is.
The funny thing is that if you search "Leupold vs Bushnell Elite" and look at forum threads in USA, MOST people will recommend a Bushnell scope for a given price. In Canada nearly everyone praises American-made Leupolds and bashes Bushnells. Not surprising, considering that Canada always lags behind the USA when it comes to gun stuff.
The only time i ever dealt with Bushnell warranty was when i walked in (their warranty depot is 10min away from me) with a 30 year old Banner that i had on my rimfire. One of the rubber seals on the elevation cap dried out and cracked. I wanted to buy a new seal, but the nice lady said they didnt carry parts for such an old scope anymore. She offered me a new Banner scope with same characteristics at cost price ($50, compared to $120 in stores). When i told her "But my scope was made in Japan and the new one is made in Taiwan" , she said "You can keep the old one"...