Briggs are better than 99% of the copy engines around and to be honest the Vanguard are BETTER than the Honda, but Honda have the brand embedded in the UK, warranty exists on the engine with your local Briggs and Stratton centre (Same as Honda) (Same as Loncin) The problem with Loncin is EP Barrus are about the only place you can get any warranty work done and there are only two or 3 in uk - compared to hundreds off Briggs or Honda authorised centres.
I'll get an image to you tomorrow. Be mid morning as we have TNT coming in for a brief visit...