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Yes, it's similar. The rumble strips don't work - in the sense that they cause less discomfort the harder you hit them - but people on bikes skirt them because they can.
What they did to SG to KP struck me as waste of time / money. RP seem to think it works and I guess they have the data to back that up.
The same approach applied to MA - HPC Broad Walk may well be awful with 1,200 people on bikes / hr at peak times - it would be interesting to know how the throughput between the two compares.
Howard-
I think the changes in Kensington Gardens were a bit of a waste of time and money. There never seemed to be significant conflict on that route since most traffic was end-to-end. Hyde Park seems slightly different, Broad Walk was always an area where I routinely encountered clueless tourist pedestrians wandering (often backwards, holding a camera) across the bike lane (in contrast to the South Carriage drive, which has a fence along its south edge, preventing crossing). Since there was no real acknowledgement of the bike lane (as designated by the white line and bike symbols), giving cyclists a sense of ownership of that lane it seemed to add to the potential conflict and stress. Re-signing it to clarify that it's a genuinely shared-use path across its whole width makes more sense to me. I've never understood whay people would expect it to be anything other than a low-speed lane i.e., a pedestrian area to which cyclists are given access.
ffm
This looks like what has been done on the bike route in the south part of Kensington Gardens. Essentially it's traffic calming for cyclists to put the onus on them to slow down and avoid conflicts, while removing the central white line that seemed to routinely confuse/be ignored by tourists.
One, perhaps predictable, outcome is that cyclists simply leave the path to avoid having their teeth rattled by the granite rumble strips, leading to little muddy patches by the side of the path.
It's not awful, and it may slow some people down southbound. The slight uphill gradient northbound tended to keep speeds down in my experience.