All these petitions ask for the same thing
Which one is gaining votes most quickly? Who cares - both are asking for the exactly the same outcome.
The original petition started two calendar months ago but was probably largely ignored until last Friday when Treezapeeza decided to use the queen as a bargaining chip to limit the wanton destruction she's carrying out in order to keep the Tory party together. Since Friday, literally 100s more petitions have been submitted to parliament who allowed one of these to continue (strictly speaking against their rules). They've then linked all the other 150 petitions to the second one (thus increasing the hit rate in search engines for the proTrump petition).
At last count roughly 1.75m + 175k petitioners are all asking parliament to debate whether Trump should be afforded a state visit or not. Still, it saves all that going out in the cold and wet and doing all that shouting.