I have not received my ECA report yet and I honestly don’t know if only masters would suffice or not; I have sent both masters and bachelors transcripts as I luckily found an old sealed & stamped bachelor’s transcript lying around. Based on what I read here on this community, I think masters should suffice and furthermore it depends on what the WES report says I believe. It is possible that just masters degree can be used to count towards 50 points on CRS-C (skills transferability) provided that the WES report says “Canadian Equivalency: Master’s Degree” and “Admission Requirements: Bachelor’s Degree”. More discussion on this topic in the post below.
You can even call WES Toronto and ask them how they evaluate and what the report would look like. I recently called them at 416-972-0070 for another matter and they were fast and very helpful.
The latest CRS score of the lowest-ranked candidate invited is 442 so your calculated score of 449 would have qualified.