Glossary entry (derived from question below)
English term or phrase:
heavy hitter
Portuguese translation:
peso pesado
English term
heavy hitter
Proposed translations
Brazil
Engineer, translator on tech/ business
Native in: Portuguese
Works in: English to Portuguese
peso pesado
Brazil
Medicine and gaming, 10+ experience
Native in: Portuguese (Variant: Brazilian) 
Works in: English to Portuguese, Spanish to Portuguese
importante/de extrema influência
"bigwig", important or influential person; baseball player who hits many doubles or triples (Sports)
Spain
Fast and accurate
Native in: English
Works in: Portuguese to English, English to Portuguese, Spanish to English, and 1 more.
mostra a que veio
Portugal
Maria Teresa Borges de Almeida 
30+ years translating EU documents
Native in: Portuguese (Variant: European/Portugal)
Works in: English to Portuguese, French to Portuguese, Spanish to Portuguese, and 1 more.
preponderante
Carpe Diem!!
Native in: Portuguese
Works in: English to Portuguese, French to Portuguese, Portuguese to English
essencial
Electric Engineer/Military
Native in: Portuguese
Works in: English to Portuguese, Portuguese to English
"fator" predominante
Creio ser isto.
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Note added at 34 mins (2008-04-30 17:59:18 GMT)
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Embora o termo "fator" não conste do texto.
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