Thanks for the link.
However the OP talks about comparing junk cleaning in CCleaner to Performance Optimising in Norton, and that is obviously going to give different results because they are differnt things.
To be meaningful you would have to :
Compare the junk cleaning in one to the junk cleaning in the other.
Compare the Perfomance Optimisation in one to the PO in the other.
Compare the startup app reduction in one to the startup reduction in the other.
Ensuring that the setting in each are the same (or as close as possible) before comparing.
Not forgetting to reset the computer back to exactly how it was before running the first one, (reloading a full system image), so that the second has exactly the same things to look at.
But before doing anything like that think about this:
Norton and CCleaner are now part of the same overall company, so such tools and techniques are being shared by the two companies and the underlying junk cleaning/Performance Optimising software is very likely to be the same software with just a different user interface.*
(In fact I don't believe that Norton even had a Performance Optimiser before the merger of the companies, in which case the one that Norton have now will be the Performance Optimiser from CCleaner ported over and now included in Norton AV.
I'd also think that Norton's Startup-app reduction was probably also ported from CCleaner, and that the junk file cleaning now there is a version of CCleaner's Health Check).
The rest of the options there in Norton are a disc defragmenter/optimiser (CCleaner doesn't do that, Piriform have Defraggler for that), and tools that are specific to an AV to stop the AV itself interfering with performance, so those aren't in CCleaner.
In the end though it's the users choice which one they want to use, or if they want to use both.
* Looking at those 7 Norton categories on that webpage there are 3 that can be compared directly with the CCleaner equivalent (and are probably the same thing anyway):
<strong>Norton 'Speed up my computer startup time'. Probably the 'Speed' module from CCleaners 'Health Check' (or Tools>Startup, same thing).</strong>
<strong>Norton</strong> 'Improve the time it takes programs and files to load'. Defrag/optimise - <strong>Defraggler</strong> not CCleaner.
<strong>Norton 'Remove temporary files and folders that make my computer run slow'. Probably the cleaning module from CCleaner 'Health Check' .</strong>
<strong>Norton</strong> 'Optimize your boot volume'. Defrag/optimise - <strong>Defraggler</strong> not CCleaner.
<strong>Norton</strong> 'Improve performance when I play games or watch movies'. Stops the AV interfering with running tasks, <strong>AV specific not needed in CCleaner</strong>.
<strong>Norton</strong> 'Stop interruptions when I use my favorite apps'. Stops the AV interfering with running tasks, <strong>AV specific not needed in CCleaner</strong>.
<strong>Norton 'Show me programs that consume resources and slow me down'. CCleaner 'Performance Optimizer'</strong>