Yes, 1920x1080p is TRUE full HD to date. 1080p is Progressive Scan which means actual full lines of resolution and actual size.
1440x1080i is not true HD.
1080i is equal to 720p interlace at 1080i and spread out at the size of 1080 to view larger, but not as clean or sharp as true captured 1920x1080p.
There no such thing as 1440x1080p - it is 1080i interlaced.
Interlaced means each line is doubled by the processor and interlaced within one another to achieve 1080 picture size.
Size and actual quality are two different things altogether.
1920x1080P is full the full TRUE High Definition to date.
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