Those warranties sound great, thats definately something to consider and definately worth the $$ IMHO.
There is a LBS in Boulder, CO (University Cycles) that I have bought 2 bikes from and their service in getting warranty work done has been beyond description (even getting me an upgraded
specialized FS frame which cost more than the original bike I bought). They are more expensive (although reasonable). My takeaway from the experience (same as with the Bulls) is that it boils down to a good relationship between the dealer and the manufacturer and the dealer having respect for their customer.
The more local LBS(Louisville Cyclery) is super popular with the 'racer crowd' and they have an attitude to match. I actually went to buy my Bulls from them initially and gave them name/number and they never called me back despite me going back twice (in person) to confirm they had my info. A year later I went there to buy some tubes and the owner introduced himself to me outside and I told him the story and his response was 'bummer dude'. I havnt been back for anything since. I have yet to meet anyone wearing one of their cycling jerseys who is friendly.
I LOVE my bulls as well, I wish Bulls had more of a US presence. When I bought mine, there were few LBS options. I actually bought mine from a shop called Small Planet ebikes in Longmont, CO. They are not perfect but earned their keep when my Bulls Battery died.
A more recent shop is now available (ebikes of colorado in louisville) and they are a top notch ebike shop. Im lucky to have them so close. I bought a iZIP Moda E3 (brose) from them. They are super friendly and everyone in the shop is super respectful. The amount of business they do on weekends is unreal. The difference is they cater to the people buying these bikes instead of having a 'racer crowd mentality'. Since they are so closed to Louisville Cyclery, Bulls wont let them be a dealer. Thats definately something Bulls should reconsider. I would have bought my latest ebike from them if they could have gotten one (cube Reaction Hybrid 45 EX 625 Allroad 29) but have decided to do my third DIY ebike project instead.