Clearly, there are some places that will be better than others and as a consequence of this people that may get a first at some unis may struggle to get the same at others.
IMO, standardisation isn't the problem because the main reason people struggle to get into to high ranking unis is because they know that the quality of teaching is better there (perhaps there may be some people who are focused on the prestige of a name of a unj, but I would say these people are in the minority.) Differing proportions of firsts is more of an inherent consequence of people having differing abilities than anything else.
Its true to be honest, Lower rank universitys and some ex polys make it so much easier to obtain 2.1's or firsts.
The worse thing is some employers will hire someone with a higher grade from a lower rank university.
I know people who haven't done great at alevels (barely passed) and are obtaining 1sts at ex polys which is great for them as there doing really well but its not necessarily fair.
Is your first name John and your last name Smiths?