NO!!
Answer:
Plastic and glass "break down" in different manners. Glass is a solid and can be reduced to sand like particles through mechanical action. Essentially a glass bottle can turn to a handful of sand. Plastic breaks down in a different manner under the impact of various agents - mechanical action, chemical attack, ultraviolet degradation, etc. for each type of plastic (plastics incorporating starches break down quickly under some conditions - teflons break down very slowly) The rate of this degradation varies with the exposure to these agents.
No studies have been done to assess the maximum rate of breakdown of glass and each of the various types of plastic to some as yet unspecified "broken down" condition
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Glass bottles take about 1 million years to breakdown see also: Cotton rags 1-5 months
Paper 2-5 months
Rope 3-14 months
Orange peels 6 months
Wool socks 1 to 5 years
Cigarette butts 1 to 12 years
Plastic coated paper milk cartons 5 years
Leather shoes 25 to 40 years
Nylon fabric 30 to 40 years
Tin cans 50 to 100 years
Aluminum cans 80 to 100 years
Plastic 6-pack holder rings 450 years
Glass bottles 1 million years
Plastic bottles Forever