SQL Full text match value is returning only Boolean (1 or 0) for matched items
===

I have the following SQL statement:

    SELECT
    	g.*,
    		(
    			MATCH (g.GameTitle) AGAINST ('call of duty')
    			OR g.GameTitle SOUNDS LIKE 'call of duty'
    		)
    	AS MatchValue,
    	p.id AS platformid,
    	p.alias AS PlatformAlias,
    	p.name,
    	p.icon
    FROM
    	games AS g,
    	platforms AS p
    WHERE
    	(
    		(
    			MATCH (g.GameTitle) AGAINST ('call of duty')
    			OR g.GameTitle SOUNDS LIKE 'call of duty'
    		)
    		OR
    		(
    			MATCH (g.Alternates) AGAINST ('call of duty')
    			OR g.Alternates SOUNDS LIKE 'call of duty'
    		)
    	)
    
    AND g.Platform = p.id
    ORDER BY MatchValue DESC

Which returns a correct set of results when matching against a FullText Index, however the "MatchValue" that is reported is of a Boolean nature (0 or 1) only.

If I remove line 5 of the statement:

    OR g.GameTitle SOUNDS LIKE 'call of duty'

I get decent match values ranging from say around 5.23 to 15.56, but I lose some functionality when matching against "Alternates".

I'm not brilliant with SQL and it has taken me several days to get it functioning this much...

Is there any way to get lines 5 and 6 to return a non boolean match value so that my results are properly ordered?

Thanks in advance ;)