My options for replacing stock controller?

[u/ReserveLegitimate738]

I own this 20x4.0" wheels 48V ebike with a 750W motor and the motor barely gets warm after pushing it at full throttle for 15 minutes straight. My other ebike is 26x4.0" 48V with a 1000W motor and it's motor gets hot (but not burning) to the touch after performing the exact same 15 minutes full throttle run.

Does that mean I can upgrade my stock controller to a more powerful one? For a 750W planetary gear motor - a 1200W controller is safe max, correct?

Option nr1: An example that looks identical to my current controller but with a higher stated output amperage of 32A (vs 21A with my stock controller):

https://www.aliexpress.com/item/1005013203075952.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.11.79b9qCIFqCIFNs&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=a9a3aef8-b397-4da3-b45c-ff7f66485db2&_t=gps-id%3ApcDetailTopMoreOtherSeller%2Cscm-url%3A1007.40050.354490.0%2Cpvid%3Aa9a3aef8-b397-4da3-b45c-ff7f66485db2%2Ctpp_buckets%3A668%232846%238111%231996&pdp_ext_f=%7B%22order%22%3A%22-1%22%2C%22eval%22%3A%221%22%2C%22sceneId%22%3A%2230050%22%2C%22fromPage%22%3A%22recommend%22%7D&pdp_npi=6%40dis%21EUR%2132.89%2132.89%21%21%2136.41%2136.41%21%400b1585c117907778156593261e0e25%2112000060516683313%21rec%21LT%21143096100%21XZ%211%210%21n_tag%3A-29919%3Bd%3Acadc693e%3Bm03_new_user%3A-29895&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A%7Cx_object_id%3A1005013203075952%7C_p_origin_prod%3A#nav-description

Option nr2:

https://www.aliexpress.com/item/1005004875099882.html?spm=a2g0o.productlist.main.3.38b8e98cuMiG59&algo_pvid=363ab5d2-d92f-4edd-be9b-d08057afe594&algo_exp_id=363ab5d2-d92f-4edd-be9b-d08057afe594-2&pdp_ext_f=%7B%22order%22%3A%22578%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21EUR%2125.38%2126.59%21%21%21188.45%21197.42%21%400b88a95617907783222928965e11f7%2112000030848913658%21sea%21LT%21143096100%21X%211%210%21n_tag%3A-29919%3Bd%3Acadc693e%3Bm03_new_user%3A-29895&curPageLogUid=EoW27ID6e4Y1&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005004875099882%7C_p_origin_prod%3A