There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Ok, I think that I found the source of that claim. It seems that there is a book from E. C. Foenander called "Big game of Malaya: their types, distribution and habits" from 1952. Sadly I can't see the preview of the book, just fragments, but it seems that it discuss the record of 2,700 lb from Rowland Ward. Probably there is more information as this summary of the book, presented by the JBNHS Vol. 51 mentions that the discussion is in page 10 and 11, check this:
*This image is copyright of its original author
So, I guess that this is the source of the claim that gaurs of Indochina region are bigger, but I would like to see what is the conclution about that huge weight "cleaned" for the gaur.
If someone can check that book it will be perfect.