Grin hashrate : 4:62 KGps 
That's the graph rate. Each graph is defined by 2^33 (~8 billion) hashes.you just nitpicking.
What matter is GPS or hashrate is ALL Time LOW.
G1 ASICs available generally, even directly from ipollo still recently I think. This still represents thousands of ASICs securing the chain as it is, but all time low hashrate means you get the most coins for the least work, so never been a better time to mine.