Huge gap between Pagespeed and GT Metrix performance stats in wordpress site

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So I have a wordpress site(fresh site, 0 plugins) and one of the page has an embedded video link and a Canva embedded code(fancy data table). I ran the page through both Google pagespeed and GTMetrix and saw stark difference in the results. Posting the PS/GT results here. Please help me make sense of it:

**Performance:** 28 / A Grade, 100% performance, 92% structure

**First contentful paint:** 7 seconds/ 372 ms

**Largest contentful paint:** 7 seconds/ 548 ms

**Total Blocking Time:** 3150ms /0 ms

**Speed Index:** 9.7 seconds / 480 ms

I removed the video embedded code and above pagespeed stats change to following in the same order: 52/7.1seconds/7.1 seconds/320ms/7.2ms.

On removing both, the canva embedded code and youtube one, the stats moved to this: 100/1second/1second/0ms/2.4 seconds

Next I added the canva table as a webp image and youtube embedded code which gave the below results 66/1.4s/1.7s/1930ms/6.7 seconds

I have a few questions:

1. Why such a stark difference between the 2 performance reports?
2. Is there anything I can do make sure page’s performance is not compromised when using multiple embeds from canva and youtube?

Sorry for the long post and thanks for answering.

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