As I say, what's the alternative then? Biggest animal wins, simple as that? What a FARCE this competition would be if that was how it worked.
I presume FARCE is in caps because you appreciate that this is indeed a farce. Allowing tiny and relatively tiny creatures to be scaled up is equally a farce in that they would then win any sporting contest (speed, power, reflexes, jumping whatever). The same laws of science that allow them to generate such power relative to size also restrict the size they are able to be. What allowance it is appropriate to make is up to the individual voter, as is their understanding of what constitutes hardness.
Just like in a General Election us commentators can only try and make people aware of the issues and how they may matter, but at the end of the day no matter what reasoned arguments they are presented with many people will vote UKIP because Nigel Farage likes a pint and an Eastern European looked at them funny once, many people will vote for Tabby Cat because they have one for a pet, many will vote for seagull because this is a Brighton forum and many will vote for Tardigrade because they're plain fookin weird.