This might not seem like much of an acheivement, but note, the top teams on BOINCStats earned most of their credits when there was an ASIC based project (Bitcoin Utopia) available.
Though team Gridcoin did have a few members with ASICs, most of our processing credits are from CPUs and GPUs, so this is a truly epic amount of science the team has completed!
Even though Gridcoins combined RAC is many times the top 4, as you see at current rates it will be over a year for the next overtake, so lets enjoy it for now.
Rest assured, I'll be watching for #3 spot!