You're completely misunderstanding the point. IT DOES NOT MATTER WHAT EXAM YOU TAKE. TCF is not easier than TEF because you need a B2 and not a B2+. Idk where you're getting this bogus information from. The actual designation of A1 to C2 is
completely irrelevant. This is not DELF/DALF. What matters is the actual score you get, and the conversion of that score to CLB levels. Whether TEF or TCF calls it B1 or Y17 makes absolutely no difference (to be more precise, there actually is no difference between CEFR levels between exams. Once again, either you're adhering to incorrect information or you're misunderstanding it).
Here's the ircc website for score conversions. The only thing that matters is to get your scores above the CLB7 level.
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/operational-bulletins-manuals/standard-requirements/language-requirements/test-equivalency-charts.html
^ Scroll all the way to the bottom.
If I have in any way made you "consider TCF as well", then I have wasted your time. Pick an exam an stick to it. Any time spent deciding which exam is easier or better is time wasted. Simple as that.
The way to get your desired score is toL
1. Get your
true language ability to
at least a low B2.
2. Pick an exam TCF or TEF (the most important factor is availability in your city or country), and prepare specifically for that exam to get a result
above your true language ability.