There is more friction in the Topre keyboard.
With the same amount of effort, it is easier to both depress and return on the MX Brown.
I've found EC keyboards to be relatively 'sluggish' in comparison with MX tactiles. A useful experiment might be trying to type on Ergo Clears, which you can buy as regular stock switches now [Cherry MX Ergo Clear and Cherry MX Purple.]
I found that I typed faster on Pro Purples and ~65 G Ergo Clears than I did with MX Browns. This is because the tactile feedback is crisper, more immediate, and more definite with Ergo Clears, and because the return force might be greater using Ergo Clears with certain springs.
A modern version of Pro Purples might be the new Keychron and Gateron 'Bananas,' which seem to place a Brown or Ergo Clear-sized bump at the top of the keypress, rather than the middle. You can buy whole keyboards with these 'Bananas' pretty affordably from Keychron. This dynamic also exists with low-profile switches [Bananas and the heavier Lime being available.]
So you might find that you actually type fastest with crisp / snappy medium-tactiles in the MX world, or 'speed' switches like the many new long-pole light tactiles [Gateron Mini i, WS Light Tactile, TTC Gold Brown Pro, the heavier Gateron Baby Kangaroo 2.0, or the lighter and almost regular-pole KTT Macaron Orange.]