Mailspect development team tested the upgrade Match My Email with the four leading browser. They tested on the reprocessing and matching of 16 emails with Salesforce.com. Here are the results through an embedded web tab in Salesforce.com:

Chrome 20 seconds
Safari 25 seconds
Firefox 26 seconds
Internet Explorer 30 seconds

In a native mode the hosted service that matches emails to Salesforce.com file types like Leads, Contacts, Account and Opportunties, the response time improvement about 3 – 5 seconds on each browser.